ARM: mach-shmobile: r8a7779: SATA DT configuration

Allow configuration of the r8a7779 SoC SATA controller using a flattened device
tree.

Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
diff --git a/arch/arm/boot/dts/r8a7779.dtsi b/arch/arm/boot/dts/r8a7779.dtsi
index 18383db..fe5c6f2 100644
--- a/arch/arm/boot/dts/r8a7779.dtsi
+++ b/arch/arm/boot/dts/r8a7779.dtsi
@@ -88,4 +88,11 @@
 		compatible = "renesas,rcar-thermal";
 		reg = <0xffc48000 0x38>;
 	};
+
+	sata: sata@fc600000 {
+		compatible = "renesas,rcar-sata";
+		reg = <0xfc600000 0x2000>;
+		interrupt-parent = <&gic>;
+		interrupts = <0 100 0x4>;
+	};
 };